Three-dimensional solitons in two-component Bose-Einstein condensates
Three-dimensional solitons in two-component Bose-Einstein condensates
复制标题
二元玻色-爱因斯坦凝聚态中的三维孤子
DOI：
10.1088/1674-1056/23/11/110308
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发表时间：
2014
影响因子：
1.7
通讯作者：
Yang Shi-Jie
中科院分区：
文献类型：
--
作者：
Liu Yong-Kai;Yang Shi-Jie
研究了R2 × S1空间中具有轴对称位形的两分量玻色-爱因斯坦凝聚中的一类孤立子。相应的拓扑结构被称为Hopfion。自旋织构不同于传统的三维skyrmion和纽结，它具有两个同伦不变量。Hopfion的稳定性是通过在虚时间内演化Gross-Pitaevskii方程来验证的。
We investigate a kind of solitons in the two-component Bose—Einstein condensates with axisymmetric configurations in the R 2× S 1 space. The corresponding topological structure is referred to as Hopfion. The spin texture differs from the conventional three-dimensional (3D) skyrmion and knot, which is characterized by two homotopy invariants. The stability of the Hopfion is verified numerically by evolving the Gross—Pitaevskii equations in imaginary time.